Characteristic polynomial
$$\begin{equation}\left(\lambda + 5\right)^{5} \left(\lambda^{2} - \lambda - 31\right)^{2} \left(\lambda^{7} - 11 \lambda^{6} - 88 \lambda^{5} - 566 \lambda^{4} - 358 \lambda^{3} - 408 \lambda^{2} - 3047 \lambda + 3509\right)\notag\end{equation}$$
Minimal polynomial
$$\begin{equation}\left(\lambda + 5\right)^{2} \left(\lambda^{2} - \lambda - 31\right) \left(\lambda^{7} - 11 \lambda^{6} - 88 \lambda^{5} - 566 \lambda^{4} - 358 \lambda^{3} - 408 \lambda^{2} - 3047 \lambda + 3509\right)\notag\end{equation}$$
Quantum multiplication matrix
$$\begin{equation}\begin{pmatrix}0 & 4 & 4 & 12 & 12 & 6 & 18 & 12 & 18 & 12 & 54 & 32 & 32 & 80 & 80 & 140 \\ 1 & -1 & 1 & 1 & 0 & 2 & 10 & 12 & 2 & 0 & 8 & 12 & 12 & 42 & 12 & 48 \\ 1 & 1 & -1 & 1 & 0 & 2 & 2 & 0 & 10 & 12 & 8 & 12 & 12 & 12 & 42 & 48 \\ 1 & 1 & 1 & -1 & 3 & 2 & 2 & 0 & 2 & 0 & 8 & 0 & 0 & 6 & 6 & 16 \\ 1 & 0 & 0 & 2 & 0 & 0 & 4 & 4 & 4 & 4 & 12 & 12 & 6 & 18 & 18 & 32 \\ 0 & 1 & 1 & -2 & \frac{1}{2} & -2 & -1 & 0 & -1 & 0 & -5 & 4 & 12 & 10 & 10 & 36 \\ 0 & 1 & 0 & 2 & -\frac{1}{4} & 1 & -1 & 3 & 2 & 0 & \frac{5}{2} & 2 & 0 & 7 & -1 & 3 \\ 0 & 1 & 0 & 0 & 1 & 0 & 2 & -1 & 0 & 1 & 1 & 4 & 2 & 10 & 2 & 12 \\ 0 & 0 & 1 & 2 & -\frac{1}{4} & 1 & 2 & 0 & -1 & 3 & \frac{5}{2} & 2 & 0 & -1 & 7 & 3 \\ 0 & 0 & 1 & 0 & 1 & 0 & 0 & 1 & 2 & -1 & 1 & 4 & 2 & 2 & 10 & 12 \\ 0 & 0 & 0 & 1 & \frac{3}{2} & 0 & 0 & 1 & 0 & 1 & 0 & 0 & 2 & 4 & 4 & 6 \\ 0 & 0 & 0 & 0 & 0 & 1 & 2 & -\frac{1}{4} & 2 & -\frac{1}{4} & 0 & -1 & 3 & \frac{5}{2} & \frac{5}{2} & 6 \\ 0 & 0 & 0 & 0 & 0 & 1 & 0 & 1 & 0 & 1 & -3 & 2 & -2 & -1 & -1 & 4 \\ 0 & 0 & 0 & 0 & 0 & 0 & 1 & \frac{3}{2} & 0 & 0 & \frac{5}{2} & 0 & 1 & 0 & 2 & 4 \\ 0 & 0 & 0 & 0 & 0 & 0 & 0 & 0 & 1 & \frac{3}{2} & \frac{5}{2} & 0 & 1 & 2 & 0 & 4 \\ 0 & 0 & 0 & 0 & 0 & 0 & 0 & 0 & 0 & 0 & 0 & 1 & \frac{3}{2} & \frac{5}{2} & \frac{5}{2} & 0\end{pmatrix}\notag\end{equation}$$